Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, tu cach
va hanh » van hanh, va thanh, va danh
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
te sach » toc sach
loc va » hoc va, luc va
vi cua » vai cua, di cua
ve cam » ve cac, va cam, ve cai

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 (te sach)) ky dang xa hoi. hieu ((ve cam) or (ve cham)) loc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky dang xa hoi. hieu ((ve cam) OR (ve cham)) loc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky dang xa hoi. hieu ((ve cam) or (ve cham)) loc va hanh vi cua tre*.