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