Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
tu sach » thu sach, su sach, tu cach
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
te sach » toc sach
y lang » o lang, _ lang, tay lang
tuc va » thuc va, truc va, tuc xa
vi su » va su, ve su, ki su

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) or (te sach)) y lang xa hoi. ((hieu ve) or (hieu va)) cam tuc va danh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) y lang xa hoi. ((hieu ve) OR (hieu va)) cam tuc va danh vi su triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) y lang xa hoi. ((hieu ve) or (hieu va)) cam tuc va danh vi su triet*.