Perhaps you should try some spelling variations:
truong va » truong dai, truong cao, truong dao
truoc va » truc va, thuoc va, truoc bua
tinh vi » trinh vi, tinh voi, tinh va
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
cua tu » cua tuc, cua su, cua cu
sac ky » cac ky, sai ky
va nam » van nam, ha nam, va nay

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang xa hoi. hieu va nam ((truoc va) OR (truong va)) tinh vi ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu va nam ((truoc va) OR (truong va)) tinh vi ((cua tre) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. hieu va nam ((truoc va) OR (truong va)) tinh vi ((cua tre) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu va nam ((truoc va) OR (truong va)) tinh vi ((cua tre) or (cua tu))*.