Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
dang cong » dung cong
tranh va » tranh van, trang va, trinh va
tan toan » tan tran, tap toan, van toan
toan cau » 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: hoc thieu tinh - canh tranh va ((nhung cong) or (dang cong)) tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - canh tranh va ((nhung cong) OR (dang cong)) tan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - canh tranh va ((nhung cong) or (dang cong)) tan toan cau*.