Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
nganh xay » nganh mac, nganh y, nganh ma
lang van » tang van, hoang van, giang van
thai cua » than cua, tai cuc, tri cua
dang van » hoang van, hang va
va danh » va dinh, va dan, dia danh
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, ban hanh
cac duc » cac du, cao duc, cac dac
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 xay ((lang van) or (dang van)) hoi. hieu va cac duc ((va hanh) or (va danh)) thai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nganh xay ((lang van) OR (dang van)) hoi. hieu va cac duc ((va hanh) OR (va danh)) thai cua te.
• Adding a wildcard symbol may retrieve word variants: hoc nganh xay ((lang van) or (dang van)) hoi. hieu va cac duc ((va hanh) or (va danh)) thai cua te*.