Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ban thanh » ban hanh, ban hang
cau tren » cu tren, dau tren, ca tren
kho tang » cao tang
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
su sach » so sach, vu sach
dai cau » dat cau, da cau, dai hau
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam
su sac » su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sac) OR (su sach)) ((kho tang) or (ky nang)) ma hoi. hieu ve cam duc ban thanh dai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su sach)) ((kho tang) OR (ky nang)) ma hoi. hieu ve cam duc ban thanh dai cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) OR (su sach)) ((kho tang) or (ky nang)) ma hoi. hieu ve cam duc ban thanh dai cau tren".
• Adding a wildcard symbol may retrieve word variants: ((su sac) OR (su sach)) ((kho tang) or (ky nang)) ma hoi. hieu ve cam duc ban thanh dai cau tren*.