Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thieu cach » hieu cach, thieu cac, hieu cac
hoc thieu » toc thieu, hoc hien
nang hang » nang sang, hang hang, cang thang
tai nhung » thai nhung, thi nhung, tai hung
hang tai » hang va, dung tai
van toan » van tan, van thanh, manh toan
van tuan » van quan, van ban, anh tuan

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 cach - nang hang tai nhung cong ((van toan) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu cach - nang hang tai nhung cong ((van toan) OR (van tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu cach - nang hang tai nhung cong ((van toan) or (van tuan)) cau*.