Perhaps you should try some spelling variations:
thanh dam » thanh dat, thanh nam, thanh tam
vu khach » vu khanh, vu khac, vay khach
hieu van » hieu va, thien van, lieu va
hanh dao » lanh dao, thanh dat, doanh dao
cham tuc » nham thuc, pham thuc, tham thuc
khach ky » hanh ky, thanh ky
van cham » van chat, van tham, va cham
cai hoa » cau hoa, cam hoa, dai hoa
cai hoi » cau hoi, dai hoi, lai hoi
tuc va » thuc va, truc va, tuc xa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach ky nang ((cai hoi) OR (cai hoa)). hieu van cham tuc va ((hanh dao) or (thanh dam)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ky nang ((cai hoi) OR (cai hoa)). hieu van cham tuc va ((hanh dao) OR (thanh dam)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu khach ky nang ((cai hoi) OR (cai hoa)). hieu van cham tuc va ((hanh dao) or (thanh dam)) cua te".
• Adding a wildcard symbol may retrieve word variants: vu khach ky nang ((cai hoi) OR (cai hoa)). hieu van cham tuc va ((hanh dao) or (thanh dam)) cua te*.