Perhaps you should try some spelling variations:
thien van » thi van
duoc van » duoc va, duc van, duoc ban
van hanh » van thanh, ban hanh, van anh
thu sac » thu sach, thu san, thu xac
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
hanh di » hanh vi, hanh de, hang di
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky nang xa hoi. ((hieu va) or (thien van)) tao duoc van hanh di ((cua chu) OR (sua chua))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky nang xa hoi. ((hieu va) OR (thien van)) tao duoc van hanh di ((cua chu) OR (sua chua)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sac ky nang xa hoi. ((hieu va) or (thien van)) tao duoc van hanh di ((cua chu) OR (sua chua))".
• Adding a wildcard symbol may retrieve word variants: thu sac ky nang xa hoi. ((hieu va) or (thien van)) tao duoc van hanh di ((cua chu) OR (sua chua))*.