Perhaps you should try some spelling variations:
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
vi cu » vi xu, vi du
vi su » va su, ve su, ki su

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 y nang xa hoi. ((hieu van) or (thien van)) cam xuc va danh ((vi cu) or (vi su)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. ((hieu van) OR (thien van)) cam xuc va danh ((vi cu) OR (vi su)) tren.
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. ((hieu van) or (thien van)) cam xuc va danh ((vi cu) or (vi su)) tren*.