Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
cua tre » cua te, cuu tre, cua triet
va hanh » van hanh, va thanh, va danh
cac dac » cac dan, cac dai, cac bac
qua cac » cua cac
tang ma » mang may, tang van
sang xa » song xa, lang xa, sang ma
nang ma » sang ma, nang cao, mang may
sac ky » cac ky, sai ky
dac va » duc va, day va, dat 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) or (tang ma)))) hoi. hieu qua cac dac va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((sang xa) OR (((nang ma) OR (tang ma)))) hoi. hieu qua cac dac va hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((sang xa) or (((nang ma) or (tang ma)))) hoi. hieu qua cac dac va hanh dai cua tre*.