Perhaps you should try some spelling variations:
ve triet » va trien, su triet
thuc dan » thuc hanh, hoc dan, thuc vat
trang xa » trang va, trang ha, trong xa
hanh ve » hanh vi, hanh va, hanh kem
hieu ve » hieu va, hieu van
tuc va » thuc va, truc va, tuc xa
sac ky » cac ky
ve cam » ve cham, ve cac, va cam
ve ve » de ve, va ve, ke ve

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) OR (sac ky)) trang xa hoi. hieu ve cam ((tuc va) or (thuc dan)) hanh ve ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sai ky) OR (sac ky)) trang xa hoi. hieu ve cam ((tuc va) OR (thuc dan)) hanh ve ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sai ky) OR (sac ky)) trang xa hoi. hieu ve cam ((tuc va) or (thuc dan)) hanh ve ve triet".
• Adding a wildcard symbol may retrieve word variants: te ((sai ky) OR (sac ky)) trang xa hoi. hieu ve cam ((tuc va) or (thuc dan)) hanh ve ve triet*.