Perhaps you should try some spelling variations:
sang tai » hang tai, sang tao, tang tai
hieu ve » hieu va, hieu van
dan lap » phan lap, dan luan
danh vi » hanh vi, dinh vi, danh di
vi cua » vai cua, di cua
loc va » luc va
su sac » su sach, su cac, su xac
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky ((dan lap) or (sang tai)) hai. hieu ve cam ((loc va) OR (hoc va)) danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((dan lap) OR (sang tai)) hai. hieu ve cam ((loc va) OR (hoc va)) danh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky ((dan lap) or (sang tai)) hai. hieu ve cam ((loc va) OR (hoc va)) danh vi cua te*".