Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien xanh » hien hanh, hien nhanh, chieu xanh
trung cap » truong cao, trung tam
trong tan » trong quan, trong cac, trong ca
cap dung » ap dung, cao dung, chan dung
toan cao » toan tap
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) or (dieu hanh)) - thanh trung cap dung trong tan ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (dieu hanh)) - thanh trung cap dung trong tan ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (dieu hanh)) - thanh trung cap dung trong tan ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (dieu hanh)) - thanh trung cap dung trong tan ((toan cao) OR (toan ban))*.