Perhaps you should try some spelling variations:
cam luoc » cam xuc, tom luoc, cam lo
thinh le » trinh ly
thanh le » thanh ve, thanh de, thanh liem
luoc van » luoc can, luoc va, luc van
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
hieu ve » hieu van
nang ma » tang ma, sang ma, nang cao
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: te sach ky nang ma hoi. ((hieu ve) or (hieu va)) cam luoc van ((thanh le) OR (thinh le)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. ((hieu ve) OR (hieu va)) cam luoc van ((thanh le) OR (thinh le)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. ((hieu ve) or (hieu va)) cam luoc van ((thanh le) OR (thinh le)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. ((hieu ve) or (hieu va)) cam luoc van ((thanh le) OR (thinh le)) cua tre*.