Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
ban hanh » ban hang
cham cuu » cap cuu, chat cua
su cham » su pham, tu cham, vu cham
hai cua » thai cua, dai cua, hoi cua
cuu ban » cuu van, cua ban, cuu san
mai hoi » mai khoi, dai hoi, lai hoi
hieu su » hieu sau, tieu su, hieu so
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
me hoi » le hoi
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: tu sac ky nang ((((me hoi) or (xa hoi))) or (mai hoi)). hieu su cham cuu ban hanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((((me hoi) OR (xa hoi))) OR (mai hoi)). hieu su cham cuu ban hanh hai cua te.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((((me hoi) or (xa hoi))) or (mai hoi)). hieu su cham cuu ban hanh hai cua te*.