Perhaps you should try some spelling variations:
thien van » thi van
cau tren » cu tren, dau tren, cau treo
thuc day » thuc dan, thuc vat
day manh » van manh, duc manh, ha manh
ca tren » cu tren, la tren, co tren
manh vi » hanh vi, mach vi, manh va
hieu ve » hieu va, hieu van
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. ((hieu ve) or (thien van)) am thuc day manh vi ((cau tren) or (ca tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang x hoi. ((hieu ve) OR (thien van)) am thuc day manh vi ((cau tren) OR (ca tren)).
• Adding a wildcard symbol may retrieve word variants: su sac ky nang x hoi. ((hieu ve) or (thien van)) am thuc day manh vi ((cau tren) or (ca tren))*.