Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
su triet » su viet, su tien, ve triet
thi hang » thi hanh, thi nang, thi hong
hieu van » hieu va, thien van, lieu va
sach thi » sach thu, sach tai, sach thieu
quoc ban » quoc bao, quoc lan, quoc quan
cuu tre » cua tre, cau tren, cau treo
su sach » so sach, vu sach
xuc ban » duc ban, cuc ban, xuat ban
hang xa » hoang xa, hang va, hang ca

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 thi hang xa hoi. hieu van nam ((xuc ban) OR (quoc ban)) thanh van ((cuu tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thi hang xa hoi. hieu van nam ((xuc ban) OR (quoc ban)) thanh van ((cuu tre) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thi hang xa hoi. hieu van nam ((xuc ban) OR (quoc ban)) thanh van ((cuu tre) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: su sach thi hang xa hoi. hieu van nam ((xuc ban) OR (quoc ban)) thanh van ((cuu tre) or (su triet))*.