Perhaps you should try some spelling variations:
thuat sach » thuat san
thuat lanh » thuat lap, thuat san
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
cao suc » cao su, cao duc
va hanh » va thanh, va danh, ban hanh
va cao » va cac, va co, va dao
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 lanh)) ky nang xa hoi. hieu va cao suc ((va hanh) OR (van hanh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (thuat lanh)) ky nang xa hoi. hieu va cao suc ((va hanh) OR (van hanh)) vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) or (thuat lanh)) ky nang xa hoi. hieu va cao suc ((va hanh) OR (van hanh)) vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (thuat lanh)) ky nang xa hoi. hieu va cao suc ((va hanh) OR (van hanh)) vai cua te*.