Perhaps you should try some spelling variations:
thanh trung » thanh tung
dang trong » dung trong, dong trong, lang trong
hoc thieu » toc thieu
trung cua » truong cua, trung tuan, trung cap
hach toan » thanh toan, manh toan
cua dang » cua cong, cua ban
tac toan » tap toan, tam toan, tich toan

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

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