Perhaps you should try some spelling variations:
cham truc » cau truc, nham thuc, nam truc
pham thuc » phap thuc, pham chuc, nham thuc
va triet » va thiet, va trien, ve triet
phan lap » phan dau
van phan » van phong, van thanh, luan phan
sach ky » sac ky, sach y, sach ty
te sach » toc sach
hieu vu » hieu va, hieu ve, hieu su
hoa hoi » khoa hoi, hoa hoc, hoa doi
ho hoi » hoc hoi, hoi hoi, co hoi
lap va » tap va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang ((ho hoi) OR (hoa hoi)). hieu vu ((cham truc) or (pham thuc)) van phan lap va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((ho hoi) OR (hoa hoi)). hieu vu ((cham truc) OR (pham thuc)) van phan lap va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((ho hoi) OR (hoa hoi)). hieu vu ((cham truc) or (pham thuc)) van phan lap va triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((ho hoi) OR (hoa hoi)). hieu vu ((cham truc) or (pham thuc)) van phan lap va triet*.