Perhaps you should try some spelling variations:
chau tre » chay tren, chau tho, cho tre
cau luoc » cau luc, muu luoc, hau loc
lam chau » lai chau, lam chu, lam chat
hanh lam » thanh lap, hanh kem, hanh va
van hanh » van thanh, ban hanh, van anh
luoc van » luoc can, luoc va, luc van
hieu va » lieu va, hieu qua
ty nang » ky nang, ty hang, ly nang
tu sach » thu sach, su sach, te sach
va cau » van cau, va cac, va dau
x hoi » o hoi, x ho, 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) or (ty xang)) ((x hoi) OR (xa hoi)). hieu va cau luoc van hanh lam chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ty xang)) ((x hoi) OR (xa hoi)). hieu va cau luoc van hanh lam chau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty nang) or (ty xang)) ((x hoi) OR (xa hoi)). hieu va cau luoc van hanh lam chau tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) or (ty xang)) ((x hoi) OR (xa hoi)). hieu va cau luoc van hanh lam chau tre*.