Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien sach » dien sach, kien sach, thien hach
trung vap » trung cap, trung va, trung van
trong tan » trong quan, trong cac, trong ca
vap dung » van dung, ap dung, va dung
tan chan » dan chan, ban chan, can chan
chan man » chan nan, than man, chan doan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - thanh trung vap dung trong tan chan man~.
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - thanh trung vap dung trong tan chan man*.