Perhaps you should try some spelling variations:
va thanh » ban thanh, va tinh, le thanh
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
thi cuc » tai cuc
cuc tre » duc tre, cua tre, cuu tre
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
co tuc » co thuc, co tu, co toc
va co » vo co

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 y nang ma hoi. hieu va co tuc ((va thanh) or (gia thanh)) thi cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. hieu va co tuc ((va thanh) OR (gia thanh)) thi cuc tre.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. hieu va co tuc ((va thanh) or (gia thanh)) thi cuc tre*.