Perhaps you should try some spelling variations:
sach tham » sach nha
cau luoc » cau luc, muu luoc, hau loc
luoc van » luoc can, luoc va, luc van
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
chau tre » chay tren, chau tho, cho tre
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
xang x » nang x
va cau » van cau, va cac, va dau

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) or (sach tham)) xang x ho. hieu va cau luoc van hanh lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach tham)) xang x ho. hieu va cau luoc van hanh lai chau tre.
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) or (sach tham)) xang x ho. hieu va cau luoc van hanh lai chau tre*.