Perhaps you should try some spelling variations:
cham loc » cham soc, chon loc, cham o
te sach » toc sach
sach ha » sach nha, sach han, sach xa
ha nang » kha nang, hoa nang, da nang
nang ma » tang ma, sang ma, nang cao
hieu vu » hieu va, hieu su, dieu vu
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
ma hoi » mai hoi, xa hoi, ma hoa
loc va » hoc va, luc va
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: te sach ha nang ma hoi. ((hieu vu) or (hieu ve)) cham loc va danh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ha nang ma hoi. ((hieu vu) OR (hieu ve)) cham loc va danh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: te sach ha nang ma hoi. ((hieu vu) or (hieu ve)) cham loc va danh vi cua vat*.