Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
tac thuoc » tao thuoc, truc thuoc, tac thuong
vat hoang » van hoang, vao hoang, viet hoang
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
hoang de » hoang _
nang ha » nang hai, nang han, nang hoa
ha hoi » hoa hoi, ha noi, xa hoi
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ha hoi. hieu van ((tac thuoc) or (cach thuc)) vat hoang de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ha hoi. hieu van ((tac thuoc) OR (cach thuc)) vat hoang de cua triet.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ha hoi. hieu van ((tac thuoc) or (cach thuc)) vat hoang de cua triet*.