Perhaps you should try some spelling variations:
thanh trung » thanh tung
khong dung » thong dung, phuong dung, cuong dung
hanh tang » hanh trang, anh tang, hanh mang
hay khong » bay khong, hang khong, hoac khong
soc dieu » so dieu, bo dieu, moi dieu
hoc dieu » hoc thieu, hoc hien
dung tan » dung toan, duong tan, dung tai
tan toan » tan tran, tap toan, van toan
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: ((soc dieu) or (hoc dieu)) hanh - ((hanh tang) or (thanh trung)) hay khong dung tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((soc dieu) OR (hoc dieu)) hanh - ((hanh tang) OR (thanh trung)) hay khong dung tan toan cao.
• Adding a wildcard symbol may retrieve word variants: ((soc dieu) or (hoc dieu)) hanh - ((hanh tang) or (thanh trung)) hay khong dung tan toan cao*.