Perhaps you should try some spelling variations:
cau treo » cau theo, cau triet, cau trieu
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
sach ky » sac ky, sach y, sach ty
van hac » van hoc, van hai, van chat
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
van ha » van hoa, van chat, van hanh
x hoi » xa hoi, o hoi, x ho

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 ky nang x hoi. hieu ((van hac) or (van ha)) truc va hanh vi ((cau treo) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. hieu ((van hac) OR (van ha)) truc va hanh vi ((cau treo) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. hieu ((van hac) or (van ha)) truc va hanh vi ((cau treo) or (cau tren))*.