Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
vien cac » vien bach, vien dai, vien da
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
xuc van » duc van, luc van, xuc ban
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua
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) or (thuat sach)) ky nang xa hoi. hieu ((ve cam) or (vien cac)) xuc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) ky nang xa hoi. hieu ((ve cam) OR (vien cac)) xuc van hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) ky nang xa hoi. hieu ((ve cam) or (vien cac)) xuc van hanh vi cua tre*.