Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ve triet » va trien, su triet
va triet » va thiet, va trien, cua triet
tp thanh » tap thanh, ta thanh, tu thanh
sang tai » hang tai, sang tao, tang tai
cam tuc » cam xuc, cam tu, nam thuc
su sach » so sach
hieu ve » hieu va, hieu van
tai hoi » tai khoi, dai hoi, tai hai
ky sang » ky nang, ky dang, ky tang
vu sach » vu bach, vu khach
tuc tp » tuc tap, thuc tap
ve cam » ve cham, ve cac, va cam

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) OR (vu sach)) ky sang tai hoi. hieu ve cam tuc tp thanh dai ((va triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky sang tai hoi. hieu ve cam tuc tp thanh dai ((va triet) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ky sang tai hoi. hieu ve cam tuc tp thanh dai ((va triet) or (ve triet))".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ky sang tai hoi. hieu ve cam tuc tp thanh dai ((va triet) or (ve triet))*.