Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
truc dan » thuc dan, tuc dan, truc ban
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ky lang » ky nang, ky dang, ky tang
hanh de » hanh ve
cua tre » cua te, cuu tre, cua triet
ve cau » ke cau, va cau, ve cac
sai ky » sac ky
te sai » te tai, te bai, te lai

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 xa hoi. hieu ve cau truc dan ((hanh de) or (hanh kem)) ((cua tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky lang xa hoi. hieu ve cau truc dan ((hanh de) OR (hanh kem)) ((cua tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: te sai ky lang xa hoi. hieu ve cau truc dan ((hanh de) or (hanh kem)) ((cua tre) or (cau tren))*.