Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
te sach » toc sach
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
ky tang » ky nang, ky dang, kho tang
ky sang » ky nang, ky dang, duy sang
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va

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

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