Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh lai » hanh lam, hanh tai, thanh lap
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
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: ((thu hoach) or (thuat sach)) ky nang x hoi. hieu ((ve cam) OR (va cam)) xuc va hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu hoach) OR (thuat sach)) ky nang x hoi. hieu ((ve cam) OR (va cam)) xuc va hanh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu hoach) or (thuat sach)) ky nang x hoi. hieu ((ve cam) OR (va cam)) xuc va hanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thu hoach) or (thuat sach)) ky nang x hoi. hieu ((ve cam) OR (va cam)) xuc va hanh lai cua tre*.