Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
chau tre » chay tren, chau tho, cho tre
sach thu » sach thue, sach thieu, sach tham
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, xach tay
xuc van » duc van, luc van, xuc ban
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ty) OR (sach thu)) nang xa hoi. hieu ((ve cam) or (ve cac)) xuc van hanh lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ty) OR (sach thu)) nang xa hoi. hieu ((ve cam) OR (ve cac)) xuc van hanh lai chau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ty) OR (sach thu)) nang xa hoi. hieu ((ve cam) or (ve cac)) xuc van hanh lai chau tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ty) OR (sach thu)) nang xa hoi. hieu ((ve cam) or (ve cac)) xuc van hanh lai chau tre*.