Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
tang mai » tang ma, tang tai, lang mai
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ky tang » ky nang, ky dang, kho tang
ve cam » ve cham, ve cac, va cam
su xac » pu xac, su cac
su sac » su sach, su cac

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 xac)) ky tang mai hoi. hieu ve cam duc tan thanh san ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su xac)) ky tang mai hoi. hieu ve cam duc tan thanh san ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su xac)) ky tang mai hoi. hieu ve cam duc tan thanh san ((cua tre) or (cuu tre))*.