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