Perhaps you should try some spelling variations:
hoc tieng » hoc hien
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tranh va » tranh van, trang va, trinh va
va thong » va thuong, va phuong, he thong
cong van » cong vang, song van, cong tan
cong san » cong tac
phan cac » nhan cach, phan dau, phan lap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc tieng) or (hoc thiet)) anh - canh tranh va thong ((cong van) or (cong san)) phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc tieng) OR (hoc thiet)) anh - canh tranh va thong ((cong van) OR (cong san)) phan cac.
• Adding a wildcard symbol may retrieve word variants: ((hoc tieng) or (hoc thiet)) anh - canh tranh va thong ((cong van) or (cong san)) phan cac*.