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
van cam » van nam, van lam, van cau
su sach » so sach, vu sach
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
su sac » 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) OR (su sach)) ky tang xa hoi. hieu van cam duc ban ((thanh hai) or (thanh phan)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su sach)) ky tang xa hoi. hieu van cam duc ban ((thanh hai) OR (thanh phan)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) OR (su sach)) ky tang xa hoi. hieu van cam duc ban ((thanh hai) or (thanh phan)) cua te".
• Adding a wildcard symbol may retrieve word variants: ((su sac) OR (su sach)) ky tang xa hoi. hieu van cam duc ban ((thanh hai) or (thanh phan)) cua te*.