Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh tri » thanh tri, hanh tai, hanh trinh
van hanh » van thanh, ban hanh, van anh
ve cham » va cham, ve chat, vu cham
nang xa » lang xa, nang ma, mang xa
tu van » tu va
te sai » te tai, te bai, te lai
sai ky » sac ky
ve cam » ve cac, va cam, ve cai

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

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