Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cham xuc » cam xuc, chat xuc, cham soc
sach ty » sach y, sach tu, sach thu
hai van » thai van, ha van, hai tan
va hanh » van hanh, va thanh, va danh
nang ma » sang ma, nang cao, mang may
hieu va » lieu va, hieu qua
tang ma » mang may, tang van
va cham » va chat, va tham
xuc va » duc va, tuc va, luc va
lai va » loai va, mai va, dai va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ty ((nang ma) or (tang ma)) hoi. hieu va cham xuc va hanh ((lai va) or (hai van)) thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty ((nang ma) OR (tang ma)) hoi. hieu va cham xuc va hanh ((lai va) OR (hai van)) thiet.
• Adding a wildcard symbol may retrieve word variants: thuat sach ty ((nang ma) or (tang ma)) hoi. hieu va cham xuc va hanh ((lai va) or (hai van)) thiet*.