Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
hang tai » hang va, dung tai
ky lang » ky nang, ky tang, tay lang
cua tre » cuu tre, cua triet, dua tren
ky dang » ky nang, ky danh
van hoi » van hoa, van hoc, van hoe
hieu ve » hieu va, hieu van
cac bac » cac bai, cac ban, cac cach
va hang » van hang, va nang, va lang
ve cac » va cac, vien cac
bac va » ban va, bac ha, bao va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc nganh ((ky lang) OR (ky dang)) van hoi. hieu ve cac bac va hang tai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nganh ((ky lang) OR (ky dang)) van hoi. hieu ve cac bac va hang tai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc nganh ((ky lang) OR (ky dang)) van hoi. hieu ve cac bac va hang tai ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: hoc nganh ((ky lang) OR (ky dang)) van hoi. hieu ve cac bac va hang tai ((cua tre) or (cua te))*.