Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
su sach » so sach, vu sach
hanh ca » hanh cac, hanh cat, hanh cua
luc van » luoc van, luu van, duc van
xuc van » duc van, vuc van, xuc ban
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, xa hoi, ma hoa
ca cua » co cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ma hoi. ((hieu van) OR (hieu va)) lam ((xuc van) OR (luc van)) hanh ca cua vat~.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ma hoi. ((hieu van) or (hieu va)) lam ((xuc van) or (luc van)) hanh ca cua vat*.