Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
kham vuc » kham cuoc, khu vuc, pham vu
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
hieu ve » hieu va, hieu van
ve kham » vu kham, va kham, ve cham
vuc van » duc van, luc van, thuc van
san cua » sang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu san, tu bac

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) or (tu cac)) ky ((nang xa) OR (nang ma)) hoi. hieu ve kham vuc van thanh san cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu cac)) ky ((nang xa) OR (nang ma)) hoi. hieu ve kham vuc van thanh san cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu cac)) ky ((nang xa) OR (nang ma)) hoi. hieu ve kham vuc van thanh san cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu cac)) ky ((nang xa) OR (nang ma)) hoi. hieu ve kham vuc van thanh san cua tre*.