Perhaps you should try some spelling variations:
dua tren » dung tren
phan duc » pham duc, phan tu, phan dau
cuu tre » cua tre, cau tren, cau treo
va hanh » van hanh, va thanh, va danh
ve phan » va phan, ke phan, ve phat
tu cach » tu cac
hang xa » hoang xa, hang va, hang ca
tu hang » thu hang, tu hanh, tu hung
te sach » toc sach
hieu ve » hieu va, hieu van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (te sach)) tu hang xa hoi. hieu ve phan duc va hanh vi ((cuu tre) or (dua tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) tu hang xa hoi. hieu ve phan duc va hanh vi ((cuu tre) OR (dua tren)).
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) tu hang xa hoi. hieu ve phan duc va hanh vi ((cuu tre) or (dua tren))*.