Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » thien van, lieu va, hieu ve
van hanh » van thanh, ban hanh, van anh
hanh tai » thanh tai, hang tai, han tai
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
nam tuc » nam thuc, nam truc, nam tu
tuc van » thuc van, truc van, tuc va
tai cua » thai cua, tai cuc, tri cua
y dang » ky dang, 2 dang, _ dang
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: hoc sach y dang xa hoi. ((hieu van) OR (hieu va)) nam tuc van hanh tai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach y dang xa hoi. ((hieu van) OR (hieu va)) nam tuc van hanh tai cua te".
• Adding a wildcard symbol may retrieve word variants: hoc sach y dang xa hoi. ((hieu van) OR (hieu va)) nam tuc van hanh tai cua te*.