Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
dang vat » dang van, dong vat, dang nhat
va thanh » gia thanh, ban thanh, le thanh
hieu van » hieu va, thien van, lieu va
nhanh y » nganh y, nhan y, hanh y
nam tuc » nam thuc, nam truc, nam tu
dang va » dang van, hang va, dung va
va tinh » may tinh
cuc tu » cuc du, luc tu, duc 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 nhanh y ((dang va) or (dang vat)) hoi. hieu van nam tuc ((va thanh) OR (va tinh)) tai cuc tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nhanh y ((dang va) OR (dang vat)) hoi. hieu van nam tuc ((va thanh) OR (va tinh)) tai cuc tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc nhanh y ((dang va) or (dang vat)) hoi. hieu van nam tuc ((va thanh) OR (va tinh)) tai cuc tu".
• Adding a wildcard symbol may retrieve word variants: hoc nhanh y ((dang va) or (dang vat)) hoi. hieu van nam tuc ((va thanh) OR (va tinh)) tai cuc tu*.