Perhaps you should try some spelling variations:
dua tren » dung tren
cuu tre » cua tre, cau tren, cau treo
van anh » van thanh, tuan anh, van minh
va tham » van tham, va cham, va thanh
tu sach » thu sach, su sach, te sach
ly nang » ky nang, ly hang, ly vang
tham oc » tham nuoc, cham soc, tham hoa
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, v nang, may nang
oc van » hoc van, luoc van, quoc van
anh vi » hanh vi, anh va, anh ve

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 ((y nang) or (ly nang)) ma hoi. lieu va tham oc van anh vi ((cuu tre) or (dua tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (ly nang)) ma hoi. lieu va tham oc van anh vi ((cuu tre) OR (dua tren)).
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (ly nang)) ma hoi. lieu va tham oc van anh vi ((cuu tre) or (dua tren))*.