Perhaps you should try some spelling variations:
trang tuan » tran tuan, trung tuan, tran xuan
trong tuan » trong quan, trung tuan, trong tan
doi chieu » doc hieu, doi chi, ho chieu
hung cong » nhung cong, hung cuong, phung cong
hoc dieu » hoc thieu, hoc hien
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan ban » van 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 dieu) or (doi chieu)) xanh - hanh ((trang tuan) OR (trong tuan)) hung cong tap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc dieu) OR (doi chieu)) xanh - hanh ((trang tuan) OR (trong tuan)) hung cong tap toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc dieu) or (doi chieu)) xanh - hanh ((trang tuan) OR (trong tuan)) hung cong tap toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc dieu) or (doi chieu)) xanh - hanh ((trang tuan) OR (trong tuan)) hung cong tap toan ban*.