Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh manh » hanh mang, lanh manh, hoang manh
cua dang » cua cong, cua ban
qua dung » quang dung, su dung, qua song
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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 - hanh manh ((cua dang) or (qua dung)) cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - hanh manh ((cua dang) OR (qua dung)) cong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - hanh manh ((cua dang) or (qua dung)) cong tac toan ban*.