Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thuat lap » thuat lanh, thuat xay, thuat bai
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cao tuc » dao tuc, cao duc, cao suc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve cao » va cao, ve bao, ve cac
va cua » va chua, via cua, ca cua
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) or (thuat lap)) ky nang xa hoi. hieu ve cao tuc ((va hanh) OR (va danh)) va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (thuat lap)) ky nang xa hoi. hieu ve cao tuc ((va hanh) OR (va danh)) va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) or (thuat lap)) ky nang xa hoi. hieu ve cao tuc ((va hanh) OR (va danh)) va cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (thuat lap)) ky nang xa hoi. hieu ve cao tuc ((va hanh) OR (va danh)) va cua te*.