Perhaps you should try some spelling variations:
ve triet » va trien, su triet
nang xa » lang xa, nang ma, mang xa
ve cham » va cham, ve chat, vu cham
va tinh » may tinh
toan ve » toan va, toan ke, toan von
te sac » te sach, te cac, te san
sac ky » cac ky, sai 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 sac ky ((nang xa) or (nang x)) hoi. hieu ((ve cam) OR (ve cham)) tu va tinh toan ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((nang xa) OR (nang x)) hoi. hieu ((ve cam) OR (ve cham)) tu va tinh toan ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((nang xa) or (nang x)) hoi. hieu ((ve cam) OR (ve cham)) tu va tinh toan ve triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((nang xa) or (nang x)) hoi. hieu ((ve cam) OR (ve cham)) tu va tinh toan ve triet*.