Perhaps you should try some spelling variations:
nam xuat » nam luat, nam xua, pham xuat
dat tren » dat trong, dua tren
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang co » nang cao, nang doc, nang noi
hieu va » hieu qua
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
co hoi » co hoc, co loi
vi dat » voi dat, vi dai, va dat

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 hoi. ((hieu va) or (lieu va)) nam xuat va danh vi dat tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang co hoi. ((hieu va) OR (lieu va)) nam xuat va danh vi dat tren.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang co hoi. ((hieu va) or (lieu va)) nam xuat va danh vi dat tren*.