Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung dung » phuong dung, ung dung, thong dung
hoc chiet » hoc nhiet, hoc hien, hoc viet
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tranh va » tranh van, trang va, trinh va
dung van » duong van, dung va, dang van
van toan » van tuan, van tan, van thanh
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 chiet) or (hoc thiet)) tach - hanh tranh va nhung dung van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chiet) OR (hoc thiet)) tach - hanh tranh va nhung dung van toan ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc chiet) or (hoc thiet)) tach - hanh tranh va nhung dung van toan ban*.