Perhaps you should try some spelling variations:
thuong va » truong va, thong va, thuong mai
hieu van » hieu va, thien van, lieu va
thuoc va » thuc va, thuoc ma, thuoc tai
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
van lam » van nam
vai cua » hai cua, lai cua, bai cua
y nang » ky nang, ly nang, v nang

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 lam ((thuoc va) OR (thuong va)) tinh ((vai cua) or (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu van lam ((thuoc va) OR (thuong va)) tinh ((vai cua) OR (dai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. hieu van lam ((thuoc va) OR (thuong va)) tinh ((vai cua) or (dai cua)) te".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu van lam ((thuoc va) OR (thuong va)) tinh ((vai cua) or (dai cua)) te*.