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
dinh vi » dinh ve, dinh viet, dinh tri
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
luc va » duc va, tuc va, loc va
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: su sach ty ((lang xa) or (trong xa)) hoi. hieu ve coc luc va ((dinh vi) or (trinh viet)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((lang xa) OR (trong xa)) hoi. hieu ve coc luc va ((dinh vi) OR (trinh viet)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty ((lang xa) or (trong xa)) hoi. hieu ve coc luc va ((dinh vi) or (trinh viet)) cuu tre*.