Perhaps you should try some spelling variations:
dung truong » duong truong, dung trong, dung trung
quang tuan » quang thanh, quan luan, quang cua
thieu xanh » chieu xanh, thien anh, thien danh
truong tan » truong toan, truong van, trong tan
hieu manh » chieu xanh, hieu nganh, dieu hanh
hung tuan » hung tran, trung tuan, hung thang
tan toan » tan tran, tap toan, van 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 ((thieu xanh) or (hieu manh)) - manh ((hung tuan) OR (quang tuan)) dung truong tan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - manh ((hung tuan) OR (quang tuan)) dung truong tan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (hieu manh)) - manh ((hung tuan) OR (quang tuan)) dung truong tan toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu manh)) - manh ((hung tuan) OR (quang tuan)) dung truong tan toan tap*.