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
cua tre » cua te, cuu tre, cua triet
van lam » van nam
lang ha » long ha
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
ha hoi » hoa hoi, ha noi, xa hoi
su sac » su sach, su cac, su xac

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 lang ha hoi. hieu van lam ((xuc va) or (luc va)) thanh phan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky lang ha hoi. hieu van lam ((xuc va) OR (luc va)) thanh phan cua tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky lang ha hoi. hieu van lam ((xuc va) or (luc va)) thanh phan cua tre*.