Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung thanh » truong thanh
thanh trong » tranh trong, hanh trong, nhanh trong
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
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: ((hoc chieu) or (hoc thieu)) xanh - thanh trung thanh trong cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc thieu)) xanh - thanh trung thanh trong cong tac toan cao*.