Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
thanh le » thinh le, thanh ve, thanh de
hieu thi » sieu thi, hieu chi, hiep thi
hanh le » hanh ve, hanh de, manh le
ha duoc » hoa duoc, da duoc, va duoc
duoc va » nuoc va, duc va, duoc ma
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
thi ha » thi hai, thi hanh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (thu hoach)) ky nang xa hoi. hieu thi ha duoc va ((hanh le) OR (thanh le)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thu hoach)) ky nang xa hoi. hieu thi ha duoc va ((hanh le) OR (thanh le)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (thu hoach)) ky nang xa hoi. hieu thi ha duoc va ((hanh le) OR (thanh le)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thu hoach)) ky nang xa hoi. hieu thi ha duoc va ((hanh le) OR (thanh le)) cua tre*.