Perhaps you should try some spelling variations:
cac bac » cac bai, cac ban, cac cach
nang xa » lang xa, nang ma, mang xa
lang di » lang dai, hang di, lang du
hieu ve » hieu va, hieu van
va lang » va nang, hoa lang
tu sac » tu sach, tu cac, tu san
cua te » cua tu
ve cac » va cac, vien cac
bac va » ban va, bac ha, bao va
sac ky » cac ky, sai ky
cua cu » cua chu, cua cau, cua su

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 ((nang xa) or (nang x)) hoi. hieu ve cac bac va lang di ((cua te) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((nang xa) OR (nang x)) hoi. hieu ve cac bac va lang di ((cua te) OR (cua cu)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang xa) or (nang x)) hoi. hieu ve cac bac va lang di ((cua te) or (cua cu))*.