Perhaps you should try some spelling variations:
kmay nang » ky nang, kha nang, may nong
may nang » may nong, ky nang, cam nang
te sach » toc sach
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

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

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