Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
hang tai » hang va, dung tai
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
van cao » van dao, van hao, van cau
van bao » van ban, van dao
va hang » van hang, va nang, va lang
tai cua » thai cua, tai cuc, tri 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: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu ((van cao) or (van bao)) duc va hang tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu ((van cao) OR (van bao)) duc va hang tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ky nang xa hoi. hieu ((van cao) or (van bao)) duc va hang tai cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu ((van cao) or (van bao)) duc va hang tai cua te*.