Perhaps you should try some spelling variations:
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu van
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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