Perhaps you should try some spelling variations:
hoc thieu » toc thieu
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
anh nang » ganh nang, anh bang, anh dang
nang qua » nang quan, nang dua, nang cua
qua dung » quang dung, su dung, qua song
dan than » dan chan, ban than, van than

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) OR (hoc hien)) xanh - anh nang qua dung cong ((dan than) or (manh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) xanh - anh nang qua dung cong ((dan than) OR (manh toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (hoc hien)) xanh - anh nang qua dung cong ((dan than) or (manh toan)) cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (hoc hien)) xanh - anh nang qua dung cong ((dan than) or (manh toan)) cao*.