Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
trinh cau » trinh chat, trinh chao, trinh tu
pham hanh » pham thanh, pham anh, pham hang
may doanh » vay doanh, ly doanh, cac doanh
cau danh » cao danh, chuc danh, nam danh
hai viet » thai viet, mai viet, tai viet
cham anh » pham anh, cham binh, cham tinh
cac cap » cac cam, cac cay, cac tap
cac cau » cac mau, bac cau, ca cau
danh va » doanh va, hanh va, anh va
cao cap » cao chat
co dai » co dan
va cao » va co, va dao, va bao
cap o » cap do, cap 2, cap 1
do oi » do moi, do voi
o hai » co hai, so hai, o lai
do o » do bo, dao o, so o

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( cong trinh ((may doanh) OR (van doanh)) va cac cap ((do oi) or (do o)) viet nam ) or ((( chuong trinh ((cham anh) or (pham hanh)) va cao cap o hai viet nam ) or ( chuong trinh cau danh va cac cau ((co dai) or (do dai)) viet nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( cong trinh ((may doanh) OR (van doanh)) va cac cap ((do oi) OR (do o)) viet nam ) OR ((( chuong trinh ((cham anh) OR (pham hanh)) va cao cap o hai viet nam ) OR ( chuong trinh cau danh va cac cau ((co dai) OR (do dai)) viet nam )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( cong trinh ((may doanh) OR (van doanh)) va cac cap ((do oi) or (do o)) viet nam ) or ((( chuong trinh ((cham anh) or (pham hanh)) va cao cap o hai viet nam ) or ( chuong trinh cau danh va cac cau ((co dai) or (do dai)) viet nam ))))".
• Adding a wildcard symbol may retrieve word variants: (( cong trinh ((may doanh) OR (van doanh)) va cac cap ((do oi) or (do o)) viet nam ) or ((( chuong trinh ((cham anh) or (pham hanh)) va cao cap o hai viet nam ) or ( chuong trinh cau danh va cac cau ((co dai) or (do dai)) viet nam ))))*.