Perhaps you should try some spelling variations:
nhanh hai » nhanh thai, thanh hai, nhanh ha
chu treo » cau treo, cu tren, cau tren
sach dao » lanh dao
hieu van » hieu va, thien van, lieu va
hanh hai » thanh hai, hang hai, hanh tai
sach cao » sach cap, mach cao, sach bao
luc van » luoc van, luu van, duc van
van cam » van nam, van lam, van cau
cam luc » cam xuc, cau luc

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