Perhaps you should try some spelling variations:
thanh trung » thanh tung
dang trong » dung trong, dong trong, lang trong
phat tinh » phap tinh, phat minh, pham tinh
trung cua » truong cua, trung tuan, trung cap
trong dan » trong dang, trong san, trong tan
pha tinh » phap tinh, pham tinh, ha tinh
cua dang » cua cong, cua ban
dan chan » dan gian, dan ca, van chat
chan tap » han tap, phan tap, chan ta

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((phat tinh) OR (pha tinh)) - thanh trung cua dang trong dan chan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((phat tinh) OR (pha tinh)) - thanh trung cua dang trong dan chan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((phat tinh) OR (pha tinh)) - thanh trung cua dang trong dan chan tap*.