Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trinh » canh tranh, hanh chinh
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh han » trinh quan
tong cong » trong cong, cong cong, dang cong
dung cong » dung trong
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 trinh han ((tong cong) or (dung cong)) tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - hanh trinh han ((tong cong) OR (dung cong)) tac toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - hanh trinh han ((tong cong) or (dung cong)) tac toan ban*.