Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu van
hieu va » lieu va, hieu qua
cau luc » cau truc, cau phuc
doi cua » dai cua, hoi cua, dong cua
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
luc va » duc va, tuc va, loc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y nang ma hoi. ((hieu ve) or (hieu va)) cau luc va thanh doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang ma hoi. ((hieu ve) OR (hieu va)) cau luc va thanh doi cua te.
• Adding a wildcard symbol may retrieve word variants: toc sach y nang ma hoi. ((hieu ve) or (hieu va)) cau luc va thanh doi cua te*.