Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
duong cong » dung cong, luong cong, duong trong
theo lieu » theo tieu, theo chieu, theo yeu
lieu tinh » trieu tinh, diep tinh, bien tinh
dong cong » dung cong, dang cong, cong cong
tinh cua » trinh cua, sinh cua, tinh chat
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo lieu tinh - nhanh tinh cua ((dong cong) or (duong cong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo lieu tinh - nhanh tinh cua ((dong cong) OR (duong cong)) dan toan cao.
• Adding a wildcard symbol may retrieve word variants: theo lieu tinh - nhanh tinh cua ((dong cong) or (duong cong)) dan toan cao*.