Perhaps you should try some spelling variations:
thanh hoa » thanh pho
thu sac » thu sach, thu san, thu dac
thu xac » thau xay
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va giao » van giao, va giai, va gia
duc ban » duc tan, dua ban, duc man
duc van » duc va, duc tan, duc manh
hoa cuu » hoa huu, hoa cua, ho cuu
cuu tre » cua tre, cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sac) or (thu xac)) ky nang xa hoi. hieu va giao ((duc ban) OR (duc van)) thanh hoa cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sac) OR (thu xac)) ky nang xa hoi. hieu va giao ((duc ban) OR (duc van)) thanh hoa cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sac) or (thu xac)) ky nang xa hoi. hieu va giao ((duc ban) OR (duc van)) thanh hoa cuu tre*".