Perhaps you should try some spelling variations:
thanh tung » thanh cong
trong vang » trong van, trong dang, trong tang
hoc thieu » toc thieu, hoc hien
vang toan » van toan, dang toan, quang toan
ho chieu » theo chieu, doi chieu, mot chieu
tung vat » dung vat, tang vat, tung va
vat dung » van dung, va dung, viet dung
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) tinh - thanh tung vat dung trong vang toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) tinh - thanh tung vat dung trong vang toan tap.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) tinh - thanh tung vat dung trong vang toan tap*.