Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
va tinh » may tinh
su sach » so sach, vu sach
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
hieu ve » hieu va, hieu van
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 (thu sach)) ky tang xa hoi. hieu ve cam xuc ((van hanh) or (va tinh)) va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu sach)) ky tang xa hoi. hieu ve cam xuc ((van hanh) OR (va tinh)) va su triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu sach)) ky tang xa hoi. hieu ve cam xuc ((van hanh) or (va tinh)) va su triet*.