Perhaps you should try some spelling variations:
chau tre » chay tren, chau tho, cho tre
hanh lai » hanh lam, hanh tai, thanh lap
ve cham » va cham, ve chat, vu cham
luu van » cuu van, luan van, luu hanh
luc van » luoc van, duc van, luc va
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
ve cam » ve cac, va cam, ve cai
x hoi » xa hoi, o hoi, x ho

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. hieu ((ve cam) or (ve cham)) ((luc van) OR (luu van)) hanh lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. hieu ((ve cam) OR (ve cham)) ((luc van) OR (luu van)) hanh lai chau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x hoi. hieu ((ve cam) or (ve cham)) ((luc van) OR (luu van)) hanh lai chau tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu ((ve cam) or (ve cham)) ((luc van) OR (luu van)) hanh lai chau tre*.