Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
trong tac » trong cac, trong tan, trong tuc
tuong tac » cong tac, luong tai
theo chu » theo chieu, cho chu, chao chu
cong san » cong tac
chu han » chu van
san ran » san van, san roman, van ranh
ran cau » van cau, ban cau, can cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu han - hanh ((trong tac) or (((tuong tac) OR (tuong lai)))) thong cong san ran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu han - hanh ((trong tac) OR (((tuong tac) OR (tuong lai)))) thong cong san ran cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu han - hanh ((trong tac) or (((tuong tac) OR (tuong lai)))) thong cong san ran cau".
• Adding a wildcard symbol may retrieve word variants: theo chu han - hanh ((trong tac) or (((tuong tac) OR (tuong lai)))) thong cong san ran cau*.