Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
thong cong » trong cong, tong cong, thong thong
lieu tinh » trieu tinh, diep tinh
bien tinh » bi tinh, yen tinh, diep tinh
cua thong » cua thuong, cua khong, cua tong
tinh cua » trinh cua, sinh cua, tinh chat
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

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