Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
kho tang » cao tang
sac kho » suc khoe, cac khoi, dac khoa
tang ma » mang may, tang van
hieu va » hieu qua
da duoc » tao duoc, hoa duoc
ma tinh » man tinh, mai tinh, mau tinh
tu sac » tu sach, tu cac, tu san
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: tu sac kho tang ma hoi. ((hieu va) or (lieu va)) da duoc ((ma tinh) OR (may tinh)) viec cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac kho tang ma hoi. ((hieu va) OR (lieu va)) da duoc ((ma tinh) OR (may tinh)) viec cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac kho tang ma hoi. ((hieu va) or (lieu va)) da duoc ((ma tinh) OR (may tinh)) viec cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sac kho tang ma hoi. ((hieu va) or (lieu va)) da duoc ((ma tinh) OR (may tinh)) viec cua triet*.