Perhaps you should try some spelling variations:
sach thu » sach thue, sach tham, cach thuc
hieu van » hieu va, thien van, lieu va
dinh thi » dinh tri
hang xa » hoang xa, hang va, hang ca
van lam » van nam
lam xuc » cam xuc, lam duoc
dan thi » dang thi, tran thi, dan thuc
cuc tre » duc tre, cua tre, cuu tre
xuc ca » xuc cam, xuc cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach thu) or (sach thieu)) hang xa hoi. hieu van lam xuc ca ((dan thi) OR (dinh thi)) cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach thu) OR (sach thieu)) hang xa hoi. hieu van lam xuc ca ((dan thi) OR (dinh thi)) cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach thu) or (sach thieu)) hang xa hoi. hieu van lam xuc ca ((dan thi) OR (dinh thi)) cuc tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach thu) or (sach thieu)) hang xa hoi. hieu van lam xuc ca ((dan thi) OR (dinh thi)) cuc tre*.