Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
kha nang » phap nang, ky nang, ki nang
cua tre » cua te, cuu tre, cua triet
da nang » cam nang, cao nang
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
ve cam » ve cham, ve cac, va cam
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu bach) or (thuoc sach)) ky dang xa hoi. hieu ve cam tuc ((kha nang) or (da nang)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu bach) OR (thuoc sach)) ky dang xa hoi. hieu ve cam tuc ((kha nang) OR (da nang)) di cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu bach) or (thuoc sach)) ky dang xa hoi. hieu ve cam tuc ((kha nang) or (da nang)) di cua tre*.