Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
danh lai » danh sai, gianh lai, dinh lam
lai cua » dai cua, hai cua, lai chau
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (thu hoach)) ky nang xa hoi. hieu ve cac ((xuc va) or (tuc va)) danh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thu hoach)) ky nang xa hoi. hieu ve cac ((xuc va) OR (tuc va)) danh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thu hoach)) ky nang xa hoi. hieu ve cac ((xuc va) or (tuc va)) danh lai cua tre*.