Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
tru nang » tra nang, tri nang, truc nano
hieu va » lieu va, hieu qua
danh va » doanh va, hanh va, anh va
va danh » va dinh, va dan, va hanh
dao duc » giao duc, tao duoc
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
te sach » toc sach
va cua » va chua, via cua, ca cua
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) or (te sach)) tru nang xa hoi. ((hieu van) OR (hieu va)) dao duc va danh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) tru nang xa hoi. ((hieu van) OR (hieu va)) dao duc va danh va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (te sach)) tru nang xa hoi. ((hieu van) OR (hieu va)) dao duc va danh va cua te".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) tru nang xa hoi. ((hieu van) OR (hieu va)) dao duc va danh va cua te*.