Perhaps you should try some spelling variations:
cham luoc » cham soc, khai luoc, kham cuoc
va triet » va thiet, va trien, ve triet
van hanh » van thanh, ban hanh, van anh
luoc van » luoc can, luoc va, luc van
hanh di » hanh vi, hanh de, hang di
va cham » va chat, va tham
vu sach » vu bach, su sach, vu khach
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
vu khac » vu kham, vu khanh, bui khac
di va » dai va, di vao, doi va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (vu khac)) y ((nang xa) or (nang ma)) hoi. lieu va cham luoc van hanh di va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu khac)) y ((nang xa) OR (nang ma)) hoi. lieu va cham luoc van hanh di va triet.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (vu khac)) y ((nang xa) or (nang ma)) hoi. lieu va cham luoc van hanh di va triet*.