Perhaps you should try some spelling variations:
ve triet » va trien, su triet
chau phu » chau phi, chau au, chau tho
chieu ke » hieu ky, hieu ve, hieu kem
da hanh » dao hanh, da thanh, dan hanh
vu sach » vu bach, su sach, vu khach
hieu ke » hieu kem, hieu ky, hieu ve
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
phu da » phu la, phu ha
vi ve » va ve, gi ve, ve ve

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) OR (v nang)) xa hoi. ((hieu ke) or (chieu ke)) chau phu da hanh vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((y nang) OR (v nang)) xa hoi. ((hieu ke) OR (chieu ke)) chau phu da hanh vi ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((y nang) OR (v nang)) xa hoi. ((hieu ke) or (chieu ke)) chau phu da hanh vi ve triet".
• Adding a wildcard symbol may retrieve word variants: vu sach ((y nang) OR (v nang)) xa hoi. ((hieu ke) or (chieu ke)) chau phu da hanh vi ve triet*.