Perhaps you should try some spelling variations:
trinh viet » ninh viet, trinh vat
vu khach » vu khanh, vu khac, vay khach
coc thuc » hoc thuc, doc thuc, co thuc
trong xa » trong xay, trong ca, trong xu
khach ty » sach ty
tinh vi » trinh vi, tinh voi, tinh va
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
tang xa » trang xa, tang ma, lang xa
ve coc » ve cuoc, ve cac, ve co

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach ty ((tang xa) or (trong xa)) hoi. hieu ve coc thuc vat ((tinh vi) or (trinh viet)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ty ((tang xa) OR (trong xa)) hoi. hieu ve coc thuc vat ((tinh vi) OR (trinh viet)) cua tre.
• Adding a wildcard symbol may retrieve word variants: vu khach ty ((tang xa) or (trong xa)) hoi. hieu ve coc thuc vat ((tinh vi) or (trinh viet)) cua tre*.