Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
cam truc » cau truc, nam truc, lam truoc
ky lang » ky dang, ky tang, tay lang
hieu ve » hieu va, hieu van
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
ha hoi » hoa hoi, ha noi, xa hoi
ve cam » ve cham, ve cac, va cam

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 nang)) ha hoi. hieu ve cam truc va hanh vi ((cuu tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nganh ((ky lang) OR (ky nang)) ha hoi. hieu ve cam truc va hanh vi ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc nganh ((ky lang) or (ky nang)) ha hoi. hieu ve cam truc va hanh vi ((cuu tre) OR (cua tre))".
• Adding a wildcard symbol may retrieve word variants: hoc nganh ((ky lang) or (ky nang)) ha hoi. hieu ve cam truc va hanh vi ((cuu tre) OR (cua tre))*.