Perhaps you should try some spelling variations:
ve triet » va trien, su triet
nang xa » lang xa, mang xa, ang xa
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
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 cham, ve cac, va cam
cam tu » cam thu, nam tu, dam tu

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 ma))) or (nang x)) hoi. hieu ve cam 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 ma))) OR (nang x)) hoi. hieu ve cam 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 ma))) or (nang x)) hoi. hieu ve cam tu va tinh toan ve triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((((nang xa) OR (nang ma))) or (nang x)) hoi. hieu ve cam tu va tinh toan ve triet*.