Perhaps you should try some spelling variations:
sang tai » hang tai, sang tao, tang tai
ban hang » ngan hang
hang vai » hang va, hang tai, hang hai
hieu su » hieu sau, tieu su, hieu so
sang ma » tang ma, nang ma, sang tao
su chao » su cao, sau chan
tu sac » tu sach, tu cac, tu san
xu ban » xuc ban, tu ban, vu ban
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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 ma) or (sang tai)) hoi. hieu su chao xu ban hang vai ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((sang ma) OR (sang tai)) hoi. hieu su chao xu ban hang vai ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((sang ma) or (sang tai)) hoi. hieu su chao xu ban hang vai ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((sang ma) or (sang tai)) hoi. hieu su chao xu ban hang vai ((cua te) OR (cua tu))*.