Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
thanh hai » thanh hoa, thanh san
hieu van » hieu va, thien van, lieu va
nam duc » nam duoc, pham duc, nam thuc
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang, ky danh
duc ban » duc tan, duc van, dua ban
su sac » su sach, su cac, su xac
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: su sac ((ky tang) OR (ky dang)) xa hoi. hieu van nam duc ban ((thanh hai) or (thanh phan)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky tang) OR (ky dang)) xa hoi. hieu van nam duc ban ((thanh hai) OR (thanh phan)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky tang) OR (ky dang)) xa hoi. hieu van nam duc ban ((thanh hai) or (thanh phan)) cua te".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) OR (ky dang)) xa hoi. hieu van nam duc ban ((thanh hai) or (thanh phan)) cua te*.