Perhaps you should try some spelling variations:
thien van » thi van
sach cao » sach dao, mach cao, sach bao
sach cap » sach dao, sach bai, sach xa
hieu van » hieu va, lieu va, hieu ve
van hanh » van thanh, ban hanh, van anh
hanh hai » thanh hai, nhanh hai, hang hai
cau treo » cau theo, cau tren, cau triet
xuc van » duc van, luc van, vuc van
hai cau » hai chau, hai chu, hai hau

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