Perhaps you should try some spelling variations:
thanh day » thanh dat, thanh tay, thanh dam
duc manh » suc manh, duc anh, duc minh
thi cong » tai cong, thien cong
duc ban » duc tan, duc van, dua ban
day cua » dai cua
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang

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 v nang xa hoi. ((lieu va) or (thi cong)) lam ((duc ban) or (duc manh)) thanh day cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang xa hoi. ((lieu va) OR (thi cong)) lam ((duc ban) OR (duc manh)) thanh day cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach v nang xa hoi. ((lieu va) or (thi cong)) lam ((duc ban) or (duc manh)) thanh day cua tre*.