Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
thanh lap » thanh san, phan lap, thanh hai
dan thanh » dang thanh, danh thanh, ban thanh
su triet » su viet, su tien, ve triet
tung dan » dung dan, huong dan, trung dai
cac tung » cac tuong, cac trung, cac ung
hieu ve » hieu va, hieu van
ly nang » ky nang, ly hang, ly vang
su sach » so sach, vu sach
ve cac » va cac, vien cac
y nang » ky nang, v nang, may nang

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 ((y nang) or (ly nang)) ma hoa. hieu ve cac tung dan thanh lap ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (ly nang)) ma hoa. hieu ve cac tung dan thanh lap ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) or (ly nang)) ma hoa. hieu ve cac tung dan thanh lap ((cua triet) or (su triet))*.