Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
kho tang » cao tang
hanh hai » thanh hai, nhanh hai, hang hai
luoc van » luoc can, luoc va, luc van
tang xa » trang xa, tang ma, lang xa
cua tre » cua te, cuu tre, dua tren
sac kho » suc khoe, cac khoi, dac khoa
su sac » su sach, su cac, su xac
ve cac » va cac, vien cac
va cam » va cham, va cac, va cao

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 xa hoi. hieu ((ve cac) or (va cam)) luoc van hanh hai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac kho tang xa hoi. hieu ((ve cac) OR (va cam)) luoc van hanh hai ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sac kho tang xa hoi. hieu ((ve cac) or (va cam)) luoc van hanh hai ((cua tre) or (cua triet))*.