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