Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
trinh cua » trinh luat, trinh quan, trinh luan
tan thanh » tran thanh, tang thanh, toan thanh
thanh cau » thanh chau, thanh mau, nhanh cau
tinh cua » sinh cua, tinh chat, tranh cua
cong tan » cong tac, cong san, cong thanh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (hoc thieu)) xanh - hanh ((trinh cua) OR (tinh cua)) nhung cong tan thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc thieu)) xanh - hanh ((trinh cua) OR (tinh cua)) nhung cong tan thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (hoc thieu)) xanh - hanh ((trinh cua) OR (tinh cua)) nhung cong tan thanh cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc thieu)) xanh - hanh ((trinh cua) OR (tinh cua)) nhung cong tan thanh cau*.