Perhaps you should try some spelling variations:
trinh viet » ninh viet, trinh vat
trong xa » trong xay, trong ca, trong xu
su sach » so sach, vu sach
tinh vi » trinh vi, tinh voi, tinh va
cac luc » cau luc, coc luc, cac nuoc
sach tu » sach thu, cach tu, sach ty
hieu va » lieu va, hieu qua
tang xa » trang xa, tang ma, lang xa
cuu tre » cua tre, cau tren, cau treo
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach tu ((tang xa) or (trong xa)) hoi. hieu va cac luc va ((tinh vi) or (trinh viet)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tu ((tang xa) OR (trong xa)) hoi. hieu va cac luc va ((tinh vi) OR (trinh viet)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach tu ((tang xa) or (trong xa)) hoi. hieu va cac luc va ((tinh vi) or (trinh viet)) cuu tre*.