Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
nang dai » nang dau, nang tai, lang dai
ve cham » va cham, ve chat, vu cham
tai cua » thai cua, tai cuc, tri cua
dai hoi » dai hoc, dai hai, dai moi
va hanh » van hanh, va thanh, va danh
luc va » duc va, tuc va, loc va
cua te » cua tu
ve cam » ve cac, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((cac ky) or (sach y)) nang dai hoi. hieu ((ve cam) OR (ve cham)) luc va hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((cac ky) OR (sach y)) nang dai hoi. hieu ((ve cam) OR (ve cham)) luc va hanh tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((cac ky) or (sach y)) nang dai hoi. hieu ((ve cam) OR (ve cham)) luc va hanh tai cua te".
• Adding a wildcard symbol may retrieve word variants: su ((cac ky) or (sach y)) nang dai hoi. hieu ((ve cam) OR (ve cham)) luc va hanh tai cua te*.