Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
cong tac » cong ty
toan cau » toan cao, toan ban, toan tai
toan tap » toan 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) or (hoc thieu)) xanh - canh manh va nhung cong tac ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc thieu)) xanh - canh manh va nhung cong tac ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc thieu)) xanh - canh manh va nhung cong tac ((toan cau) or (toan tap))*.