Perhaps you should try some spelling variations:
thien van » thi van
van thanh » ban thanh, van tuan
cua triet » cua viet, su triet, va triet
thanh ve » hanh ve, thanh va, thanh vien
nang co » nang cao, nang noi, nang hoc
nam luc » nhan luc, nam thuc, nam duoc
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cua » le cua, de cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky ((nang co) or (nang doc)) hoi. thien van ((nam luc) OR (nang luc)) van thanh ve cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((nang co) OR (nang doc)) hoi. thien van ((nam luc) OR (nang luc)) van thanh ve cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((nang co) or (nang doc)) hoi. thien van ((nam luc) OR (nang luc)) van thanh ve cua triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((nang co) or (nang doc)) hoi. thien van ((nam luc) OR (nang luc)) van thanh ve cua triet*.