Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
hieu van » hieu va, thien van, lieu va
nganh ky » nganh y, nganh xay, hanh ky
cau tren » cu tren, dau tren, ca tren
van hau » van ha, van hai, van dau
nang ma » tang ma, sang ma, nang cao
danh vi » hanh vi, dinh vi, danh va
danh di » danh du, xanh di, danh dien
ma hoi » mai hoi, xa hoi, ma hoa
luc va » tuc va, loc va

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 nang ma hoi. hieu van hau ((luc va) or (duc va)) ((danh vi) or (danh di)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nganh ky nang ma hoi. hieu van hau ((luc va) OR (duc va)) ((danh vi) OR (danh di)) cau tren.
• Adding a wildcard symbol may retrieve word variants: hoc nganh ky nang ma hoi. hieu van hau ((luc va) or (duc va)) ((danh vi) or (danh di)) cau tren*.