Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
su sach » so sach
tang ma » mang may, tang van
nam xuc » cam xuc, nam xua, nam thuc
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, vu khach
xuc va » duc va, tuc va, luc va
ve cua » le cua, de cua, te cua

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) or (vu sach)) ky ((nang xa) or (tang ma)) hoi. hieu van nam xuc va thanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky ((nang xa) OR (tang ma)) hoi. hieu van nam xuc va thanh ve cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky ((nang xa) or (tang ma)) hoi. hieu van nam xuc va thanh ve cua tre*.