Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
ve triet » va trien, su triet
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
va dat » va dao, va dau, va dap
vi ve » va ve, gi ve, ve ve
nuoc » quoc, duoc, ngoc

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 (vu khach)) ky nang xa hoi. hieu va dat nuoc ((va hanh) or (va danh)) vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (vu khach)) ky nang xa hoi. hieu va dat nuoc ((va hanh) OR (va danh)) vi ve triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu khach)) ky nang xa hoi. hieu va dat nuoc ((va hanh) or (va danh)) vi ve triet*.