Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van quan » van ban
dua tren » dung tren
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
van anh » van thanh, tuan anh, van minh
vi dua » vi du, vi dum, vi lua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang xa hoi. hieu van cam xuc ((van anh) or (van quan)) vi dua tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu van cam xuc ((van anh) OR (van quan)) vi dua tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu van cam xuc ((van anh) or (van quan)) vi dua tren*.