Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
trung va » truong va, trang va, trung ha
cau tren » cu tren, dau tren, ca tren
ky lang » ky dang, ky tang, tay lang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
truc va » thuc va, thuc vat
hanh va » hang va, hanh vi
ha hoi » hoa hoi, ha noi, xa hoi
va cau » van cau, va cac, va dau

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 cham ((truc va) or (trung va)) hanh va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nganh ((ky lang) OR (ky nang)) ha hoi. hieu ve cham ((truc va) OR (trung va)) hanh va cau tren.
• Adding a wildcard symbol may retrieve word variants: hoc nganh ((ky lang) or (ky nang)) ha hoi. hieu ve cham ((truc va) or (trung va)) hanh va cau tren*.