Perhaps you should try some spelling variations:
ve triet » va trien, su triet
thuc dan » thuc hanh, hoc dan, thuc vat
trang ha » trang va, trung ha, tang ha
hanh ve » hanh vi, hanh va, hanh kem
hieu ve » hieu va, hieu van
tuc va » thuc va, truc va, tuc xa
ha hoi » hoa hoi, ha noi, xa hoi
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 ha 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 ha 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 ha hoi. hieu ve cam ((tuc va) or (thuc dan)) hanh ve ve triet*.