Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ve cach » va cach, ve cac, ve canh
cach tu » cach thuc
tu nang » tru nang, tu nong, tu nano
qua cam » qua cham, qua cac, qua ca
luc van » luoc van, duc van, luc va
luu van » cuu van, luan van, luu hanh
hanh di » hanh de, hang di, danh di
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ve cach tu nang x hoi. hieu qua cam ((luc van) OR (luu van)) ((hanh di) or (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ve cach tu nang x hoi. hieu qua cam ((luc van) OR (luu van)) ((hanh di) OR (hanh vi)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ve cach tu nang x hoi. hieu qua cam ((luc van) OR (luu van)) ((hanh di) or (hanh vi)) cua triet".
• Adding a wildcard symbol may retrieve word variants: ve cach tu nang x hoi. hieu qua cam ((luc van) OR (luu van)) ((hanh di) or (hanh vi)) cua triet*.