Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hoc thien » hoc hien, hoc thieu, hoc thiet
chinh tai » chinh tri
hang cong » dang cong, hang nong, bang cong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
chinh va » chinh ta, hanh va, tinh va
toan cao » toan ban, toan tap

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 hach - hanh ((chinh va) or (chinh tai)) hang cong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - hanh ((chinh va) OR (chinh tai)) hang cong manh toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - hanh ((chinh va) or (chinh tai)) hang cong manh toan cao*.