Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
hoc thien » hoc hien, hoc thieu, hoc thiet
nang quan » ban quan, nang suat
trong dan » trong dang, trong san, trong tan
nang qua » nang dua, nang cua, nang quy
dan toan » van toan, dan than, manh toan
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: hoc thien danh - anh ((nang qua) or (nang quan)) dung trong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien danh - anh ((nang qua) OR (nang quan)) dung trong dan toan tap*.