Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van hanh » van thanh, ban hanh, van anh
va cham » va chat, va tham
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
xuc van » duc van, luc van, vuc van
vi cua » vai cua, di cua
va cam » va cac, va cao, va cai
cua te » cua tu

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 y ((nang xa) or (nang ma)) hoi. lieu ((va cam) OR (va cham)) xuc van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y ((nang xa) OR (nang ma)) hoi. lieu ((va cam) OR (va cham)) xuc van hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y ((nang xa) or (nang ma)) hoi. lieu ((va cam) OR (va cham)) xuc van hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: thuat sach y ((nang xa) or (nang ma)) hoi. lieu ((va cam) OR (va cham)) xuc van hanh vi cua te*.