Perhaps you should try some spelling variations:
thanh vien » nhan vien, thanh van
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
thuc dan » thuc hanh, hoc dan, thuc vat
thanh de » hanh de, thanh ve, thanh do
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
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: su sach ty lang xa hoi. hieu van nam thuc dan ((thanh de) or (thanh vien)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty lang xa hoi. hieu van nam thuc dan ((thanh de) OR (thanh vien)) cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ty lang xa hoi. hieu van nam thuc dan ((thanh de) or (thanh vien)) cua te*.