Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
ban hanh » ban hang
chau tre » chay tren, chau tho, cho tre
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
luc ban » duc ban, cuc ban, luc bat
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang ((x hoi) or (x ho)). hieu ((ve cam) or (va cam)) luc ban hanh lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ((x hoi) OR (x ho)). hieu ((ve cam) OR (va cam)) luc ban hanh lai chau tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ((x hoi) or (x ho)). hieu ((ve cam) or (va cam)) luc ban hanh lai chau tre*.