Perhaps you should try some spelling variations:
han tuan » than tuan, van tuan, han luan
tuan te » tuan le, tuan ts, tuan tu
cam huu » pham huu, chat huu, cam hung
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cach tu » cach thuc
sach tu » sach thu, sach ty, sach uu
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
te cua » tue cua, le cua, de cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach y) OR (((sach tu) OR (cach tu)))) nang xa hoi. hieu va cam huu han tuan te cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach y) or (((sach tu) OR (cach tu)))) nang xa hoi. hieu va cam huu han tuan te cua tre~".
• Adding a wildcard symbol may retrieve word variants: te ((sach y) or (((sach tu) OR (cach tu)))) nang xa hoi. hieu va cam huu han tuan te cua tre*.