Perhaps you should try some spelling variations:
truc ban » thuc ban, truc dan, truc van
ban hanh » ban hang
cac truc » cau truc, cac tru, cac trung
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
hanh de » hanh ve, hanh kem
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
te sai » te tai, te lai, te hai
te bai » te bao, te tai, te ban
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sai) or (te bai)) ky lang xa hoi. hieu ve cac truc ban hanh de ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sai) OR (te bai)) ky lang xa hoi. hieu ve cac truc ban hanh de ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((te sai) or (te bai)) ky lang xa hoi. hieu ve cac truc ban hanh de ((cua tre) or (cuu tre))*.