Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va thanh » gia thanh, ban thanh, va tinh
cham xuc » cam xuc, chat xuc, cham soc
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
va cham » va chat, va tham
nang ma » tang ma, sang ma, nang cao
xuc va » duc va, tuc va, luc va
lai va » loai va, mai va, dai va
hai va » hai van, thai va, hoi va
thiet » thieu

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 (mang may)) hoi. hieu va cham xuc va thanh ((lai va) or (hai va)) thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty ((nang ma) OR (mang may)) hoi. hieu va cham xuc va thanh ((lai va) OR (hai va)) thiet.
• Adding a wildcard symbol may retrieve word variants: thuat sach ty ((nang ma) or (mang may)) hoi. hieu va cham xuc va thanh ((lai va) or (hai va)) thiet*.