Perhaps you should try some spelling variations:
thieu tach » chiet tach, chieu sach, hieu cach
thien hach » thien thanh, hien hanh
hanh trang » thanh trung, canh tranh, hanh trinh
trong dang » truong dang, trong dan, trong dong
dang toan » dang tran, dan toan, dung toan
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
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 ((thieu tach) or (thien hach)) - hanh trang ((cua dung) OR (cua dang)) trong dang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tach) OR (thien hach)) - hanh trang ((cua dung) OR (cua dang)) trong dang toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu tach) or (thien hach)) - hanh trang ((cua dung) OR (cua dang)) trong dang toan cao*".