Perhaps you should try some spelling variations:
ve triet » va trien, su triet
may nang » may nong, ky nang, cam nang
thanh va » thanh van, hanh va, thanh ha
va thanh » gia thanh, ban thanh, va tinh
hieu va » lieu va, hieu qua
tu sach » thu sach, su sach, te sach
hieu ve » hieu van
v nang » va nang, vu nang, van nang
xuc va » duc va, tuc va, luc va
va ve » va de, va le, va vi

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 ((may nang) or (v nang)) xa hoi. ((hieu ve) or (hieu va)) cam xuc va thanh va ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((may nang) OR (v nang)) xa hoi. ((hieu ve) OR (hieu va)) cam xuc va thanh va ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((may nang) or (v nang)) xa hoi. ((hieu ve) or (hieu va)) cam xuc va thanh va ve triet*.