Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
quoc ban » quoc bao, quoc lan, quoc quan
tri nang » thi nang, tra nang, tri bang
sach tri » sach tai, sach tren, sach truc
su sach » so sach, vu sach
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
xuc ban » duc ban, cuc ban, xuat ban
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve cam » ve cham, ve cac, va cam

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