Perhaps you should try some spelling variations:
dong cong » duong cong, dung cong, dang cong
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
xa dong » ha dong, van dong, lao dong
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 x ho. ((hieu ve) or (lieu va)) cam tuc xa dong cong ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang x ho. ((hieu ve) OR (lieu va)) cam tuc xa dong cong ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang x ho. ((hieu ve) or (lieu va)) cam tuc xa dong cong ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: vu sach y nang x ho. ((hieu ve) or (lieu va)) cam tuc xa dong cong ((cua triet) OR (su triet))*.