Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoc trieu » hoc thieu, hoc tieu, hoc dieu
trong dan » trong dang, trong san, trong tan
thanh lap » thanh san, phan lap, thanh hai
trinh va » trinh van, trinh vat, trinh ve
phan dau » phan tu, hang dau
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc trieu tinh - hanh trinh va dung trong dan ((thanh lap) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc trieu tinh - hanh trinh va dung trong dan ((thanh lap) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: hoc trieu tinh - hanh trinh va dung trong dan ((thanh lap) or (phan dau))*.