Perhaps you should try some spelling variations:
thuat sach » thuat san
thuat lanh » thuat lap, thuat san
hanh vai » hanh vi, hanh va, hanh tai
nang xa » nang x, lang xa, nang ma
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
suc va » duc va, tuc va, luc va
cua te » cua tu
ve cac » va cac, vien cac
ve cao » va cao, ve bao, ve co

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 ((ve cao) OR (ve cac)) suc va 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 ((ve cao) OR (ve cac)) suc va 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 ((ve cao) OR (ve cac)) suc va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (thuat lanh)) ky nang xa hoi. hieu ((ve cao) OR (ve cac)) suc va hanh vai cua te*.