Perhaps you should try some spelling variations:
truc ban » thuc ban, truc dan, truc van
ban hanh » ban hang
ky lang » ky dang, ky tang, tay lang
hieu ve » hieu va, hieu van
hanh de » hanh ve, hanh kem
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
te sai » te tai, te bai, te lai
ve cau » ke cau, va cau, ve 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 ((ky lang) OR (ky nang)) xa hoi. hieu ve cau truc ban hanh de ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ((ky lang) OR (ky nang)) xa hoi. hieu ve cau truc ban hanh de ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ((ky lang) OR (ky nang)) xa hoi. hieu ve cau truc ban hanh de ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sai ((ky lang) OR (ky nang)) xa hoi. hieu ve cau truc ban hanh de ((cua tre) or (cuu tre))*.