Perhaps you should try some spelling variations:
trung tuan » trung thanh, tran tuan, truong thanh
thong cong » trong cong, tong cong, thong thong
hien sach » dien sach, kien sach, thien hach
nhanh cau » thanh chau, nhanh ha, hang cau
nhanh cay » nhanh ha, nhanh bac, nhanh va
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - thanh ((trung tuan) or (trung tam)) thong cong tan ((nhanh cau) OR (nhanh cay))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - thanh ((trung tuan) OR (trung tam)) thong cong tan ((nhanh cau) OR (nhanh cay)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien sach - thanh ((trung tuan) or (trung tam)) thong cong tan ((nhanh cau) OR (nhanh cay))".
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - thanh ((trung tuan) or (trung tam)) thong cong tan ((nhanh cau) OR (nhanh cay))*.