Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tinh viec » tinh viet, dinh viec, sinh viec
thuoc man » thuoc ma, thuoc ban, thuoc tan
nam thuoc » nam thuc, nam thu, nha thuoc
kho tang » cao tang
man tinh » may tinh, ban tinh, quan tinh
hieu va » hieu qua
sac kho » suc khoe, cac khoi, dac khoa
ma hoi » mai hoi, xa hoi, me hoi
tu sac » tu sach, tu cac, tu san

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) OR (ma hoa)). ((hieu va) or (lieu va)) nam thuoc man tinh viec cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac kho tang ((ma hoi) OR (ma hoa)). ((hieu va) OR (lieu va)) nam thuoc man tinh viec cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac kho tang ((ma hoi) OR (ma hoa)). ((hieu va) or (lieu va)) nam thuoc man tinh viec cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sac kho tang ((ma hoi) OR (ma hoa)). ((hieu va) or (lieu va)) nam thuoc man tinh viec cua triet*.