Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
tu sang » thu sang, tu san, tu lang
sang ky » sang kyo, dang ky, tang ky
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, truc va, tuc xa

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

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