Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach thu » sach thue, sach thieu, sach tham
thu bang » thu ban, thu hang, chu bang
cham xuc » cam xuc, chat xuc, cham soc
doan van » doan va, hoang van, luan van
tu sach » thu sach, su sach, te sach
bang xa » lang xa, bang va, mang xa
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
va doan » va doanh, van doan, va dan
cua tre » cua te, cuu tre, dua tren
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thu bang xa hoi. hieu vu cham xuc va doan van ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu bang xa hoi. hieu vu cham xuc va doan van ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach thu bang xa hoi. hieu vu cham xuc va doan van ((cua tre) or (cua triet))*.