Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
danh hai » dang hai, lanh hai, manh hai
tu sach » thu sach, su sach, te sach
hai cua » thai cua, dai cua, hoi cua
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, ve cac, va cam

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 y nang xa hoi. hieu ((ve cam) or (vien cac)) ((xuc va) or (tuc va)) danh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ((ve cam) OR (vien cac)) ((xuc va) OR (tuc va)) danh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((ve cam) or (vien cac)) ((xuc va) or (tuc va)) danh hai cua tre*.