Perhaps you should try some spelling variations:
trinh vat » trinh van, trinh luat, sinh vat
san viet » gian viet, anh viet
sach thu » sach thue, sach thieu, sach tham
thu lang » thu hang, thu bang, phu lang
va viet » hoa viet, mai viet, dao viet
xuc lap » tuc lap, truc lap
tu sach » thu sach, su sach, te sach
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thu lang xa hoi. ((hieu ve) or (hieu va)) cam xuc lap trinh vat ((va viet) or (san viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu lang xa hoi. ((hieu ve) OR (hieu va)) cam xuc lap trinh vat ((va viet) OR (san viet)).
• Adding a wildcard symbol may retrieve word variants: tu sach thu lang xa hoi. ((hieu ve) or (hieu va)) cam xuc lap trinh vat ((va viet) or (san viet))*.