Perhaps you should try some spelling variations:
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
va doanh » van doanh, vay doanh, va danh
nang noi » nang doc
tai cua » thai cua, tai cuc, tri cua
lam xuc » cam xuc, lam duoc
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang co » nang cao, nang doc, nang hoc
xuc va » duc va, tuc va, luc va
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: te sach ky ((nang co) or (nang noi)) loi. ((hieu van) OR (thien van)) lam xuc va doanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang co) OR (nang noi)) loi. ((hieu van) OR (thien van)) lam xuc va doanh tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang co) or (nang noi)) loi. ((hieu van) OR (thien van)) lam xuc va doanh tai cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang co) or (nang noi)) loi. ((hieu van) OR (thien van)) lam xuc va doanh tai cua te*.