Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham luc » cham soc, nhan luc, cham cuu
van hanh » van thanh, ban hanh, van ban
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
sach ky » sac ky, sach ty, sach kem
van anh » van thanh, tuan anh, van minh
va cham » va chat, va tham
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat ((sach ky) or (sach y)) lang xa hoi. hieu va cham luc ((van hanh) or (van anh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach ky) OR (sach y)) lang xa hoi. hieu va cham luc ((van hanh) OR (van anh)) vi cua triet.
• Adding a wildcard symbol may retrieve word variants: thuat ((sach ky) or (sach y)) lang xa hoi. hieu va cham luc ((van hanh) or (van anh)) vi cua triet*.