Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van anh
tham xuc » tham nuoc, tham thuc, pham duc
hanh ki » hanh vi, hanh ky, hanh kien
xuc van » duc van, luc van, vuc van
va tham » van tham, va cham, va thanh
hieu va » lieu va, hieu qua
tu sach » thu sach, te sach, tu cach
sang ma » tang ma, nang ma, sang tao
vu sang » vua sang, vu dang, vu san
vu sach » vu bach, vu khach
su sach » so sach
ma hoi » mai hoi, xa hoi, ma hoa
ki su » ky 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 (((su sach) or (vu sach)))) vu sang ma hoi. hieu va tham xuc van hanh ki su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (((su sach) OR (vu sach)))) vu sang ma hoi. hieu va tham xuc van hanh ki su triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (((su sach) or (vu sach)))) vu sang ma hoi. hieu va tham xuc van hanh ki su triet*.