Perhaps you should try some spelling variations:
hanh gian » thanh gian, thanh giang, manh giang
thu sach » tu sach, thuat sach, thuoc sach
tu cach » tu cac
va hanh » van hanh, va thanh, va danh
ve chat » va chat, van chat
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
ve cam » ve cham, ve cac, va cam
xu tu » su tu, tu tu, vu 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 cach) or (thu sach)) ty nang xa hoi. hieu ((ve cam) or (ve chat)) duc va hanh gian xu tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thu sach)) ty nang xa hoi. hieu ((ve cam) OR (ve chat)) duc va hanh gian xu tu.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thu sach)) ty nang xa hoi. hieu ((ve cam) or (ve chat)) duc va hanh gian xu tu*.