Perhaps you should try some spelling variations:
duong thanh » dong thanh, muong thanh, luong thanh
thanh trung » thanh tung
thanh tuan » thanh toan, thanh xuan, thanh thanh
hoc thieu » toc thieu
tuan ban » tuan bang, toan ban, luan ban
va hanh » van hanh, va thanh, va danh
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (hoc hien)) tinh - thanh trung ((va hanh) or (va nang)) duong thanh tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) tinh - thanh trung ((va hanh) OR (va nang)) duong thanh tuan ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) tinh - thanh trung ((va hanh) or (va nang)) duong thanh tuan ban*.