Perhaps you should try some spelling variations:
tham cuu » cham cuu, tham cung, thai cua
hieu va » lieu va, hieu qua
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
va tham » van tham, va cham, va thanh
luu tre » luu tru, cuu tre, luy tre
dai hoi » dai hoc, dai hai, dai moi
mai hoi » mai khoi, lai hoi, mai doi
sai ky » sac ky
cuu va » cuu van, cuu ve
vi luu » vi lua
tu sai » tu bai, tu san, tu cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang ((xa hoi) or (((mai hoi) or (dai hoi)))). hieu va tham cuu va danh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang ((xa hoi) OR (((mai hoi) OR (dai hoi)))). hieu va tham cuu va danh vi luu tre.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang ((xa hoi) or (((mai hoi) or (dai hoi)))). hieu va tham cuu va danh vi luu tre*.