Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dinh cuu » dinh chi
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
nam tuc » nam thuc, nam truc, nam tu
va danh » va dinh, va dan, va hanh
y nang » ky nang, ly nang, v nang
vi cuu » vi luu, vinh cuu

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 y nang xa hoi. hieu van nam tuc ((va danh) or (gia thanh)) ((vi cuu) or (dinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu van nam tuc ((va danh) OR (gia thanh)) ((vi cuu) OR (dinh cuu)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu van nam tuc ((va danh) or (gia thanh)) ((vi cuu) or (dinh cuu)) tre*.