Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
danh doi » danh di, thanh doi, dung doi
thuc dan » thuc hanh, thuc vat
doi cua » dai cua, hoi cua
van cam » van nam, van lam, van cau
so sanh » do sanh
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
cua tu » cua tuc, cua su, cua cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) or (so sanh)) y nang xa hoi. hieu van cam ((thuc dan) or (hoc dan)) danh doi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (so sanh)) y nang xa hoi. hieu van cam ((thuc dan) OR (hoc dan)) danh doi cua tu.
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (so sanh)) y nang xa hoi. hieu van cam ((thuc dan) or (hoc dan)) danh doi cua tu*.