Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham luc » cham soc, nhan luc, cham cuu
van hanh » van thanh, ban hanh, van anh
dua tren » dung tren
te sach » toc sach
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » va thanh, va danh, ban hanh
y dang » ky dang, 2 dang, _ dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y dang xa hoi. hieu ve cham luc ((va hanh) OR (van hanh)) vi ((dua tren) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y dang xa hoi. hieu ve cham luc ((va hanh) OR (van hanh)) vi ((dua tren) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y dang xa hoi. hieu ve cham luc ((va hanh) OR (van hanh)) vi ((dua tren) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: te sach y dang xa hoi. hieu ve cham luc ((va hanh) OR (van hanh)) vi ((dua tren) or (cua triet))*.