Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
chat khong » chat chong, chat phong, cat khong
khong cong » thong cong, khong cang, chong cong
kieu tinh » lieu tinh, trieu tinh, diep tinh
bien tinh » bi tinh, yen tinh, diep tinh
tran chau » tranh chap, tran huu
cong tan » cong tac, cong san, cong thanh
tran cao » toan cao, trang cho, tranh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((kieu tinh) or (bien tinh)) - nhanh tinh chat khong cong tan ((tran cao) OR (tran chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((kieu tinh) OR (bien tinh)) - nhanh tinh chat khong cong tan ((tran cao) OR (tran chau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((kieu tinh) or (bien tinh)) - nhanh tinh chat khong cong tan ((tran cao) OR (tran chau))".
• Adding a wildcard symbol may retrieve word variants: doi ((kieu tinh) or (bien tinh)) - nhanh tinh chat khong cong tan ((tran cao) OR (tran chau))*.