Perhaps you should try some spelling variations:
thanh vien » nhan vien, thanh van
thanh ve » hanh ve, thanh va, thanh van
dua tren » dung tren
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
van cam » van nam, van lam, van cau
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
xuc va » duc va, tuc va, luc va
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 sach ky dang xa hoi. hieu van cam xuc va ((thanh ve) OR (thanh vien)) ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky dang xa hoi. hieu van cam xuc va ((thanh ve) OR (thanh vien)) ((dua tren) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky dang xa hoi. hieu van cam xuc va ((thanh ve) OR (thanh vien)) ((dua tren) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: su sach ky dang xa hoi. hieu van cam xuc va ((thanh ve) OR (thanh vien)) ((dua tren) or (cua te))*.