Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac loc » cac lop, cac toc, cac hoc
va danh » va dinh, va dan, va hanh
ve cac » va cac, vien cac
loc va » hoc va, luc va
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) or (thu hoach)) ky nang xa hoi. hieu ve cac loc va danh ((vi cua) or (de cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu hoach)) ky nang xa hoi. hieu ve cac loc va danh ((vi cua) OR (de cua)) triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu hoach)) ky nang xa hoi. hieu ve cac loc va danh ((vi cua) or (de cua)) triet*.