Perhaps you should try some spelling variations:
sach cao » sach dao, sach cap, mach cao
cao nang » cao dang, cam nang, cao tang
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
chu treo » cu tren, cau tren, chu tri
cau treo » cau theo, cau tren, cau triet
su sach » so sach, vu sach
van cam » van nam, van lam, van cau

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 cao nang x ho. hieu van cam xuc ((van hanh) or (ban hanh)) hai ((chu treo) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach cao nang x ho. hieu van cam xuc ((van hanh) OR (ban hanh)) hai ((chu treo) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach cao nang x ho. hieu van cam xuc ((van hanh) or (ban hanh)) hai ((chu treo) OR (cau treo))".
• Adding a wildcard symbol may retrieve word variants: su sach cao nang x ho. hieu van cam xuc ((van hanh) or (ban hanh)) hai ((chu treo) OR (cau treo))*.