Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
truc ban » thuc ban, truc van, truoc bang
truc dan » thuc dan, tuc dan, truc dai
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
hanh de » hanh ve, hanh kem
te sai » te tai, te bai, te lai
sai ky » sac ky
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 dang xa hoi. hieu ve cau ((truc ban) or (truc dan)) hanh de ((cua tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky dang xa hoi. hieu ve cau ((truc ban) OR (truc dan)) hanh de ((cua tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: te sai ky dang xa hoi. hieu ve cau ((truc ban) or (truc dan)) hanh de ((cua tre) or (cau tren))*.