Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
khan cua » nhan cua, than cua, han cua
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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: ho chieu tinh - hanh ((chung cu) or (khan cua)) dung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh ((chung cu) OR (khan cua)) dung cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh ((chung cu) or (khan cua)) dung cong tac toan cao*.