Perhaps you should try some spelling variations:
thanh trung » thanh tung
khien tinh » thien tinh, khien thich, bien tinh
hoc khien » hoc hien, hoc nghien, hoc thieu
trung can » trung cap, trung van, trong can
can nang » cam nang, cao nang, van nang
song dan » song danh, song van, cong dan
dan toan » van toan, dan than, manh toan
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 khien tinh - thanh trung can nang song dan toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc khien tinh - thanh trung can nang song dan toan ban*.