Perhaps you should try some spelling variations:
dai luoc » dai luong, khai luoc, dai hoc
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
qua dai » qua hai, cua dai, qua cai
luoc va » nuoc va, duoc va, loc va
y nang » ky nang, ly nang, v nang
va anh » van anh, va danh, va hanh
vi cua » vai cua, di cua
de cua » le cua, te cua, dieu cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang xa hoi. hieu qua dai luoc va anh ((vi cua) or (de cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu qua dai luoc va anh ((vi cua) OR (de cua)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu qua dai luoc va anh ((vi cua) or (de cua)) tre*.