Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
cham xuc » cam xuc, chat xuc, cham soc
va hanh » van hanh, va thanh, va danh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
nang ma » sang ma, nang cao, mang may
tang ma » mang may, tang van
san ty » san tay, van ty
xuc va » duc va, tuc va, luc va
vai va » mai va, dai va, lai 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 san ty ((nang ma) or (tang ma)) hoi. hieu va cham xuc va hanh ((vai va) or (hai va)) thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san ty ((nang ma) OR (tang ma)) hoi. hieu va cham xuc va hanh ((vai va) OR (hai va)) thiet.
• Adding a wildcard symbol may retrieve word variants: thuat san ty ((nang ma) or (tang ma)) hoi. hieu va cham xuc va hanh ((vai va) or (hai va)) thiet*.