Perhaps you should try some spelling variations:
trinh viet » trinh vat
ninh viet » sinh vien, anh viet
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
cao xuc » cam xuc, cao duc, cao suc
xuc van » duc van, luc van, vuc van
va cao » va cac, va co, va dao
cua tu » cua tuc, cua su, cua cu

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 xang xa hoi. hieu va cao xuc van ((trinh viet) or (ninh viet)) ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang xa hoi. hieu va cao xuc van ((trinh viet) OR (ninh viet)) ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty xang xa hoi. hieu va cao xuc van ((trinh viet) or (ninh viet)) ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: su sach ty xang xa hoi. hieu va cao xuc van ((trinh viet) or (ninh viet)) ((cua te) OR (cua tu))*.