Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
cua tre » cua te, cuu tre, cua triet
cao suc » cao su, cao duc
qua cao » qua cac, qua ca, qua cai
sang xa » song xa, lang xa, sang ma
nang ma » tang ma, sang ma, nang cao
sac ky » cac ky, sai ky
suc va » duc va, tuc va, luc va
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky ((sang xa) or (nang ma)) hoi. hieu qua cao suc va ((hanh dai) or (lanh dao)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((sang xa) OR (nang ma)) hoi. hieu qua cao suc va ((hanh dai) OR (lanh dao)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((sang xa) or (nang ma)) hoi. hieu qua cao suc va ((hanh dai) or (lanh dao)) cua tre*.