Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
cau tren » cu tren, dau tren, ca tren
kho tang » cao tang
tang ma » mang may, tang van
cuu tre » cua tre, cau treo
hieu ve » hieu va, hieu van
duc ban » duc tan, duc van, duc man
sac kho » suc khoe, cac khoi, dac khoa
dua ban » dia ban, cua ban, qua ban
su sac » su sach, su cac, su xac
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa

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