Perhaps you should try some spelling variations:
hanh cat » hanh cac, hanh luat, nhanh cay
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
qua cac » cua cac
cac tac » cac toc, cac bac, cac dac
hanh ca » hanh cac, hanh cua, hanh cad
ma hoi » mai hoi, xa hoi, ma hoa
tac va » tac da, tac xa, tuc va

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 ty nang ma hoi. hieu qua cac tac va ((hanh ca) or (hanh cat)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ma hoi. hieu qua cac tac va ((hanh ca) OR (hanh cat)) cau tren*.