Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cau treo » cau theo, cau tren, cau triet
va thanh » gia thanh, va tinh, le thanh
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
cam tuc » cam xuc, cam tu, nam thuc
van cam » van nam, van lam, van cau
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, xa hoi, ma hoa
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: su sach ty nang ma hoi. hieu van cam tuc ((va thanh) or (ban thanh)) hai ((cua te) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ma hoi. hieu van cam tuc ((va thanh) OR (ban thanh)) hai ((cua te) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ma hoi. hieu van cam tuc ((va thanh) or (ban thanh)) hai ((cua te) or (cau treo))*.