Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
su triet » su viet, su tien, ve triet
thanh ve » hanh ve, thanh va, thanh vien
thanh vi » hanh vi, thanh va, nhanh vi
va chat » van chat, va phat, cao chat
chat tu » nhat tu, chai tu, chay tu
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, su sach, vu khach
tu ban » thu ban, te ban
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang xa hoi. hieu va chat tu ban ((thanh vi) OR (thanh ve)) ((su triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang xa hoi. hieu va chat tu ban ((thanh vi) OR (thanh ve)) ((su triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang xa hoi. hieu va chat tu ban ((thanh vi) OR (thanh ve)) ((su triet) or (va triet))".
• Adding a wildcard symbol may retrieve word variants: vu sach y nang xa hoi. hieu va chat tu ban ((thanh vi) OR (thanh ve)) ((su triet) or (va triet))*.