Perhaps you should try some spelling variations:
thanh luc » thanh luu, than luc, nhan luc
va thanh » gia thanh, ban thanh, va tinh
tu cach » tu cac
anh dat » thanh dat, lanh dao, dinh dat
anh dai » vanh dai, anh bai, anh tai
luc van » luoc van, luu van, duc van
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
vu nang » vuc nang, va nang, vu dang
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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 (su sach)) vu nang ma hoi. hieu va thanh luc van ((anh dai) or (anh dat)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) vu nang ma hoi. hieu va thanh luc van ((anh dai) OR (anh dat)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) vu nang ma hoi. hieu va thanh luc van ((anh dai) or (anh dat)) cua tre*.