Perhaps you should try some spelling variations:
ve triet » va trien, su triet
sach thu » sach thue, sach thieu, sach tham
thanh gi » thanh nghi, thanh gian, thanh hai
va thanh » gia thanh, ban thanh, va tinh
hang tai » hang va, dung tai
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
nang ma » tang ma, sang ma, nang cao
su sach » so sach, vu sach
gi ve » gia ve, gi de, gi he

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 thu ((nang ma) or (((sang tao) OR (hang tai)))) hoi. hieu ve pham duc va thanh gi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu ((nang ma) OR (((sang tao) OR (hang tai)))) hoi. hieu ve pham duc va thanh gi ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thu ((nang ma) or (((sang tao) OR (hang tai)))) hoi. hieu ve pham duc va thanh gi ve triet".
• Adding a wildcard symbol may retrieve word variants: su sach thu ((nang ma) or (((sang tao) OR (hang tai)))) hoi. hieu ve pham duc va thanh gi ve triet*.