Perhaps you should try some spelling variations:
dat tren » dat trong, dua tren
nam xuat » nam luat, nam xua, pham xuat
dau tren » dau tien, dau tieng, dau trong
danh di » danh du, xanh di, danh dien
te sach » toc sach
nang ro » nang co, nang ho, nang ra
hieu ha » hieu hoa, hieu va, hieu ca
danh vi » hanh vi, dinh vi, danh va
y nang » ky nang, ly nang, v nang
ro hoi » co hoi, o hoi, mo hoi

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 y nang ro hoi. hieu ha nam xuat va ((danh vi) OR (danh di)) ((dau tren) or (dat tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ro hoi. hieu ha nam xuat va ((danh vi) OR (danh di)) ((dau tren) OR (dat tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ro hoi. hieu ha nam xuat va ((danh vi) OR (danh di)) ((dau tren) or (dat tren))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ro hoi. hieu ha nam xuat va ((danh vi) OR (danh di)) ((dau tren) or (dat tren))*.