Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
cong tac » cong ty
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban
manh va » hanh va, anh va, minh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu tinh - canh manh va nhung ((cong san) or (cong tac)) ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - canh manh va nhung ((cong san) OR (cong tac)) ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - canh manh va nhung ((cong san) or (cong tac)) ((toan tai) or (toan ban))*.