Perhaps you should try some spelling variations:
trong van » trong cac
su triet » su tien, ve triet
thanh vi » hanh vi, thanh va, thanh ve
vu khac » vu kham, vu khanh, bui khac
duc gia » quoc gia
su viet » so viet
cam duc » cam xuc, cao duc, pham duc
khac ty » khac thi
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khac ty ((trong van) or (mang may)) hoi. hieu ve cam duc gia thanh vi ((su triet) OR (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khac ty ((trong van) OR (mang may)) hoi. hieu ve cam duc gia thanh vi ((su triet) OR (su viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu khac ty ((trong van) or (mang may)) hoi. hieu ve cam duc gia thanh vi ((su triet) OR (su viet))".
• Adding a wildcard symbol may retrieve word variants: vu khac ty ((trong van) or (mang may)) hoi. hieu ve cam duc gia thanh vi ((su triet) OR (su viet))*.