Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
hieu van » hieu va, thien van, lieu va
phan cua » nhan cua, than cua, phat cua
vu sach » su sach, vu khach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
van cam » van nam, van lam, van cau
duc ban » duc van, dua ban, duc man
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (vu bach)) ky lang xa hoi. hieu van cam ((duc ban) or (duc tan)) thanh phan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) ky lang xa hoi. hieu van cam ((duc ban) OR (duc tan)) thanh phan cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (vu bach)) ky lang xa hoi. hieu van cam ((duc ban) or (duc tan)) thanh phan cua tre*.