Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lai » thanh hai, thanh lap, thanh loi
nang tai » hang tai, tang tai, sang tai
hieu van » hieu va, thien van, lieu va
van chat » cao chat
su sach » so sach, vu sach
tai hoi » tai khoi, dai hoi, tai hai
sach ky » sac ky, sach y, sach ty
cua te » cua tu
tuc va » thuc va, truc va, tuc xa
luc va » duc va, loc va

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

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